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Publication Date
1981
Description
Effects of a freezing-waterlogging-freezing treatment, under controlled environmental conditions, on the viability and chemical components of alfalfa (Medicago sativa L.) were determined to assess physiological responses to midwinter thaw. Alfalfa plants grown in a field were more resistant to freezing but less resistant to waterlogging than those grown in a greenhouse. Both types of plants sustained severe damage from the second freezing treatment. An accumulation of ethanol and methanol, a solubilization of proteins, and a decrease in carbohydrates occurred during the waterlogging. Two important physiological characteristics for surviving a midwinter thaw appear to be an ability to maintain freezing resistance during the thawing period and an ability to remove ethanol quickly after waterlogging.
Citation
Suzuki, M, "Responses of Alfalfa to a Simulated Midwinter Thaw" (1981). IGC Proceedings (1981-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1981/section6/5)
Archival?
Archival
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Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Responses of Alfalfa to a Simulated Midwinter Thaw
Effects of a freezing-waterlogging-freezing treatment, under controlled environmental conditions, on the viability and chemical components of alfalfa (Medicago sativa L.) were determined to assess physiological responses to midwinter thaw. Alfalfa plants grown in a field were more resistant to freezing but less resistant to waterlogging than those grown in a greenhouse. Both types of plants sustained severe damage from the second freezing treatment. An accumulation of ethanol and methanol, a solubilization of proteins, and a decrease in carbohydrates occurred during the waterlogging. Two important physiological characteristics for surviving a midwinter thaw appear to be an ability to maintain freezing resistance during the thawing period and an ability to remove ethanol quickly after waterlogging.
